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Revenue - Schedule of Contract Balances (Details) - USD ($) $ in Thousands | 6 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Jul. 01, 2018 | Jun. 30, 2018
Accounts receivable, net |  |  |  |  |
Accounts receivable, net | $ 658,080 | $ 658,080 |  | $ 635,878 | $ 651,678
Change in accounts receivable, net | 19,790 | $ 22,202 | $ 169,498 |  |
Percentage change in accounts receivable, net |  | 3.49% |  |  |
Contract assets |  |  |  |  |
Contract assets | 23,316 | $ 23,316 |  | 14,727 | $ 0
Change in contract assets |  | $ 8,589 |  |  |
Percentage change in contract assets |  | 58.32% |  |  |
Contract liabilities |  |  |  |  |
Contract liabilities | $ 455,644 | $ 455,644 |  | $ 556,691 |
Change in contract liabilities |  | $ (101,047) |  |  |
Percentage change in contract liabilities |  | (18.15%) |  |  |

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